The EasyClean Champion one of the first hopper feeders to incorporate the Squirrel-Blocker defense system. The indestructible all-metal platform is designed to entice birds of all sizes, block squirrels and prevent animal damage. The hidden two-grid defense systems sit above the seed source providing absolute protection from gray squirrels. No batteries, springs, or weights. Can be hung or pole mounted. Holds one pound of black oil seed.